Englishwoman ignores moaning from family living in Cardiff (5)

I believe the answer is:

welsh

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'cardiff' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for welsh that I've seen before include "So-called rabbit" , "From Aberystwyth, perhaps" , "Default on bet in Wales?" , "From Aberystwyth, for instancewelshw" , "- Dresser; - rarebit; - harp" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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